/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// pre-define some colors for legends.
var colorPool = ["#F8C471", "#F39C12", "#B9770E", "#73C6B6", "#16A085", "#117A65", "#B2BABB", "#7F8C8D", "#616A6B"];

function drawAreaStack(id, labels, values, minX, maxX, minY, maxY) {
    d3.select(d3.select(id).node().parentNode)
        .style("padding", "8px 0 8px 8px")
        .style("border-right", "0px solid white");

    // Setup svg using Bostock's margin convention
    var margin = {top: 20, right: 40, bottom: 30, left: maxMarginLeftForTimeline};
    var width = 850 - margin.left - margin.right;
    var height = 300 - margin.top - margin.bottom;

    var svg = d3.select(id)
        .append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.top + margin.bottom)
        .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    var data = values;

    var parse = d3.time.format("%H:%M:%S.%L").parse;

    // Transpose the data into layers
    var dataset = d3.layout.stack()(labels.map(function(fruit) {
        return data.map(function(d) {
            return {_x: d.x, x: parse(d.x), y: +d[fruit]};
        });
    }));


    // Set x, y and colors
    var x = d3.scale.ordinal()
        .domain(dataset[0].map(function(d) { return d.x; }))
        .rangeRoundBands([10, width-10], 0.02);

    var y = d3.scale.linear()
        .domain([0, d3.max(dataset, function(d) {  return d3.max(d, function(d) { return d.y0 + d.y; });  })])
        .range([height, 0]);

    var colors = colorPool.slice(0, labels.length)

    // Define and draw axes
    var yAxis = d3.svg.axis()
        .scale(y)
        .orient("left")
        .ticks(7)
        .tickFormat( function(d) { return d } );

    var xAxis = d3.svg.axis()
        .scale(x)
        .orient("bottom")
        .tickFormat(d3.time.format("%H:%M:%S.%L"));

    // Only show the first and last time in the graph
    var xline = []
    xline.push(x.domain()[0])
    xline.push(x.domain()[x.domain().length - 1])
    xAxis.tickValues(xline);

    svg.append("g")
        .attr("class", "y axis")
        .call(yAxis)
        .append("text")
            .attr("transform", "translate(0," + unitLabelYOffset + ")")
            .text("ms");

    svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

    // Create groups for each series, rects for each segment
    var groups = svg.selectAll("g.cost")
        .data(dataset)
        .enter().append("g")
        .attr("class", "cost")
        .style("fill", function(d, i) { return colors[i]; });

    var rect = groups.selectAll("rect")
        .data(function(d) { return d; })
        .enter()
        .append("rect")
        .attr("x", function(d) { return x(d.x); })
        .attr("y", function(d) { return y(d.y0 + d.y); })
        .attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); })
        .attr("width", x.rangeBand())
        .on('mouseover', function(d) {
            var tip = '';
            var idx = 0;
            var _values = formattedTimeToValues[d._x];
            _values.forEach(function (k) {
                tip += labels[idx] + ': ' + k + '   ';
                idx += 1;
            });
            tip += " at " + formattedTimeTipStrings[d._x];
            showBootstrapTooltip(d3.select(this).node(), tip);
        })
        .on('mouseout',  function() {
            hideBootstrapTooltip(d3.select(this).node());
        })
        .on("mousemove", function(d) {
            var xPosition = d3.mouse(this)[0] - 15;
            var yPosition = d3.mouse(this)[1] - 25;
            tooltip.attr("transform", "translate(" + xPosition + "," + yPosition + ")");
            tooltip.select("text").text(d.y);
        });


    // Draw legend
    var legend = svg.selectAll(".legend")
        .data(colors)
        .enter().append("g")
        .attr("class", "legend")
        .attr("transform", function(d, i) { return "translate(30," + i * 19 + ")"; });

    legend.append("rect")
        .attr("x", width - 20)
        .attr("width", 18)
        .attr("height", 18)
        .style("fill", function(d, i) {return colors.slice().reverse()[i];})
        .on('mouseover', function(d, i) {
            var len = labels.length
            showBootstrapTooltip(d3.select(this).node(), labels[len - 1 - i]);
        })
        .on('mouseout',  function() {
            hideBootstrapTooltip(d3.select(this).node());
        })
        .on("mousemove", function(d) {
            var xPosition = d3.mouse(this)[0] - 15;
            var yPosition = d3.mouse(this)[1] - 25;
            tooltip.attr("transform", "translate(" + xPosition + "," + yPosition + ")");
            tooltip.select("text").text(d.y);
        });

    // Prep the tooltip bits, initial display is hidden
    var tooltip = svg.append("g")
        .attr("class", "tooltip")
        .style("display", "none");

    tooltip.append("rect")
        .attr("width", 30)
        .attr("height", 20)
        .attr("fill", "white")
        .style("opacity", 0.5);

    tooltip.append("text")
        .attr("x", 15)
        .attr("dy", "1.2em")
        .style("text-anchor", "middle")
        .attr("font-size", "12px")
        .attr("font-weight", "bold");
}
